21549-1

Valve Seat

NSN 4820-00-031-7453

DEMIL

Shelf Life

UOM

NIIN

Demil:

Shelf Life:

N/A

UOM:

1 EA

NIIN:

000317453

Technical Specifications of NSN

Flange Diameter:

0.656 inches

Body Outside Diameter:

0.495 inches

Body Inside Diameter:

0.315 inches

End Application:

4820&670&6583

Flange Seat To Disk End Height:

0.048 inches

Under Flange Height:

0.232 inches

Hardness Rating:

28.0 rockwell c and 34.0 rockwell c

Material:

Steel comp 416

Material Specification:

Qq-s-763 cl 6 federal specification single material response

Style Designator:

Plain flanged

Fsc Application Data:

Valve

NSN:

4820-00-031-7453

Item Name:

Insert,valve Seat

Cage Code:

01359

Other Related Parts

Part Number

Cage

RNCC

RNVC

RNAAC

Status

MSDS

SADC

Part Number:

KC4070

Cage Code:

98801

RNCC:

RNVC:

RNAAC:

Status:

MSDS:

SADC:

Part Identification

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

22113

FIIG:

A15500

Concept No.:

App. Key:

Cond. Code:

Status:

Part Materials

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators

HMIC

PMIC

ESD/EMI

ENAC

MMAC

CRITL

HMIC:

PMIC:

ESD:

MMAC:

CRITL:

Packaging & Shipping

Est. Pack Size

Est. Pack Weight

Est. Item Weight

Est. Item Dim.

Pack Size:

Paclk Weight:

Item Weight:

Item Dim:

OPI

SPI No.

SPI Rev.

SPC Mkg.

LVL A

LVL B

OPI:

SPI No.:

SPI Rev.:

SPC Mkg:

LVL_A:

LVL_B:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

127220

UFC:

64490

LTL:

77.5

LCL:

WCC:

594

TCC:

SHC:

ACC:

Equipment for Aircraft

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Pricing & Availability

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Definition Definition of approved item name (AIN): "Valve Seat Insert"

A replaceable item designed to provide a stationary seating surface for a mating, moveable item such as a valve disk or the like. The body may have a flange of various shapes. For diesel and gasoline reciprocating engines, see insert, engine valve seat.